Leachate Control Research Articles

Innovation for recycling of organic matter through composter with automatic and sustainable temperature recording accessed via Bluetooth/mobile app.

Compost reactors, commonly used in experiments, industrial assays, and home residue treatment systems, have the potential to facilitate composting. Challenges persist in the realm of small-scale composting, encompassing facets such as temperature monitoring, homogenization of the compost mass, management of moisture with the control of leachate generation, and integration with a renewable energy source. This study assesses a pioneering composter prototype endowed with essential features to ensure a pragmatic and secure composting process. This includes the facilitation of remote access to temperature data via Bluetooth and a mobile application. Across successive trials, the scrutinized composter prototype consistently yielded reproducible outcomes, exhibiting a coefficient of variation below 25% for the majority of appraised parameters. In comparison to a conventional reactor, the decomposing residue mixture within the examined prototype manifested elevated temperatures (p < 0.05). Moreover, the tested prototype demonstrated C/N ratio lower than 20/1 within 45days, a higher final nitrogen concentration, and enhanced germination of seeds that served as phytotoxicity bioindicators. Notably, the prototype needed 46.6% less space, offering improved leachate control, three times faster turning time, temperature monitoring, and reduced fly attraction.

Release potential, neglected leakage and reduction countermeasures of COD and Ammonia in MSWLs

In order to eliminate the impact of the industrial revolution on the environment and improve the water ecological environment, pollutant discharge reduction is imperative. With the acceleration of global discharge reduction process, the huge pollutant release potential and potential environmental effects of municipal solid waste landfills gradually appear, but its release amount and intensity have not been quantitatively revealed. We propose a coupling method of parameter stochastic simulation and physical process model simulation to estimate the hidden leakage of large-scale regional municipal solid waste landfills, and provide a methodology for estimating the hidden leakage of landfills in other countries and even in the whole world by taking China, which has the largest amount of waste generation among developing countries, as an example. Prior to the implementation of stringent construction quality control and assurance management requirements, the average annual leachate generation potential over the entire life cycle of 2600 landfills in China was estimated to be 4.66 × 108 m3, in which the concentrations of COD and NH3-N are 5.38 × 102–6.48 × 104 mg/L and 6.10–3.50 × 103 mg/L, respectively, and the total amounts are 5.21 × 103–7.81 × 108 t and 8.09 × 102–6.65 × 107 t, respectively. About 14 % of these pollutants may leak into the environmental media through the landfill liner with the average number of holes of 21.5/ha. For different regions, the overall release, discharge and leakage of COD and NH3-N in East China account for 35.70 %, 36.68 % and 29.60 % respectively, making it the region with the highest potential for discharge and risk of leakage. Meanwhile, the implementation of mandatory regulations related to leachate generation and control has led to a significant reduction in the leakage of pollutants. For instance, comprehensively detecting and repair of holes in the impermeable liner has reduced the number of holes to 2/ha, resulting in a reduction of >90 % in the leakage of pollutants.

Critical Review of Field Studies of Chemical Surface Coatings to Mitigate Leaching from Mining Wastes.

Source control of mine drainage and leachate from mining wastes is ideal, but there is limited use of control methods aside from removal of wastes to repositories or capping wastes in situ. In some locations, neither removal nor capping is possible; thus, there is renewed interest in understanding technologies for coating mining wastes. This paper presents the current state of knowledge from a critical review of the few field case studies where chemical coating technologies have been applied to mined surfaces (e.g. a highwall) or mining wastes. It also includes laboratory studies where the same technology was examined on the same type of waste material as the field studies. The chemicals used in field studies for coating mining wastes were magnesium oxide, potassium permanganate, silicate compounds, phosphate compounds, and a furfuryl alcohol resin sealant. Descriptions of the methods employed, and results obtained are provided. Limitations of the individual studies and of the technologies in general are discussed. Potential reasons why coating technologies have not been commonly used are presented, along with further research needs.

EXAMINING DATA COLLECTION AND COMPILATION FOR DEVELOPING BIOGAS PLANTS FOR RECYCLED WASTE MANAGEMENT

In this study, open disposal area, unfortunately, stills the means of open burning of solids waste in developing environment. Provide for leachate and gas control system. The untreated dumping encourages the breeding of insects and rodents and causes several health diseases, movement of leachate into the subsurface. Due to the improper lining, raw solids waste from the existing dumping site comes in contact with directly, causing severe deterioration the quality of the water. The solid waste characterization, the effect of leachate in the dumping site, groundwater quality analysis and also for 51 wards question sheet survey has been conducted that results were analyzed using SPSS 17. Various physic and chemical parameters were estimated this includes pH, turbidity, chloride, total hardness, calcium &amp; magnesium hardness, sulphate and TDS, major cations such as calcium, magnesium ion. Everyday Thanjavur dumping ground receives 115 tones of Municipal Solid Waste from the Thanjavur city. In the part of result analysis, groundwater samples showed that dumping ground leachate constitutes a serious warning to the local aquifers. The waste generated in Thanjavur contains a maximum portion of biodegradable material, moisture content high, calorific value low and it is acceptable for biogas production. In this project, a fixed dome type biogas plant is designed because of low cost and a plan/model is recommended to improve the existing MSWM. The recommended model deals with maximize recycling and minimize landfilling of the Municipal Solid Waste. This study also has to be improved to provide efficient and effective MSWM.

Assessment of effectiveness of leachate control measures adopted by the GHMC at the Jawaharnagar dump yard, Hyderabad.

To address the problems posed by hitherto un-scientific method of dumping un-segregated solid waste at the Jawaharnagar dump yard (JDY) recently Greater Hyderabad Municipal Corporation (GHMC) adopted certain measures to scientifically process the waste at the JDU; this involves extraction of RDF and manure at various stages besides obtaining mostly inert material for final land filling. The leachate obtained during the process is separately collected and treated at the site. This study aims to check the effectiveness of these measures in controlling the leachate to the surrounding aquifer as groundwater plays a significant role in sustainable use of water resources. Groundwater samples are collected from the surrounding region and analyzed for TDS, TH, chlorides, fluorides besides PH once before the monsoon and once after the monsoon. From the results it can be shown that leachate pollution of groundwater is still a problem. When compared with the groundwater quality data in the literature taken before the recent GHMC measures, the latest data shows marginal improvement as the legacy leachate from the previous landfill nearby continues to pollute the groundwater in the vicinity of the dump yard.

Effect of expansive soils on swelling behavior of encapsulated sodium bentonite of geosynthetic clay liner (GCL)

Due to the rapid urbanization of Indian cities, the generation of MSW is exponentially increasing. The confinement of the hazardous emission from a municipal solid waste (MSW) dumpsite is the major responsibility of management and engineers. Landfill gases and leachate generation are the results of chemical and biological activities in municipal solid waste and its decomposition process. The seepage control of leachate is a crucial aspect of MSW management. The flow of leachate to groundwater is one of the major causes of groundwater contamination resulting in human health risks nearby population. Geosynthetic clay liners (GCLs) are the most preferred options to restrict the flow of leachate from dumpsite to groundwater. GCL consists of sodium/ calcium bentonite as an encapsulated material between woven and non-woven carriers. The swelling behavior of sodium bentonite with low hydraulic conductivity makes it suitable to prevent the flow through it. In this study, the swelling nature of sodium bentonite was assessed in combination with expansive soils. The soils were collected from two different regions of Uttar Pradesh as Banda and Mahoba districts. The results showed that the swelling tendency of sodium bentonite can be enhanced by using specific proportions of expansive soils.

Investigation of the Leachate Effect on Permeability and Geotechnical Characteristics of Fine-Grained Soil Modified Using Nanoclay–Nanofiber Composites

Using low permeability soils in landfill liners is a guaranteed leachate control and prevents leakage which causes environmental pollution. In this matter, the application of new technologies such as nano provides more capable filters that are used for reducing leachate pollutants and modifying the geotechnical properties of liners. The presented study attempted to conduct experimental research on nanoclay–nanofiber composite usage to control landfill liner permeability and observe its impact on the geotechnical characteristics of liners which provide a strong barrel for leachate leakage prevention and increase the liner durability for crack generations. In this regard, a total of 120 different geotechnical experiments were performed on mixed improved fine-grained soil samples which were categorized into four groups including nanoclay additives, nanofiber additives, nanocomposite additives, and control samples (without additives). According to the experimental results, permeability decreased, and geotechnical properties (e.g., Atterberg limits, unconfined compressive strength, cohesion, and friction) were increased with increasing nanocomposite content in the soil.

Tratamiento de lixiviados mezclados tipo I y tipo III mediante filtración y oxidación química

In Riobamba city from Ecuador, for more than thirty years solid urban waste was placed in an open dump, without gas and leachate control. In 2016, the landfill was technically closed and an emerging cell with the characteristics of a sanitary landfill was built nearby. The Environmental Health and Hygiene Management Department of the Riobamba Municipal Decentralized Autonomous Government monitors leachate generation, recording 19.24 m3/day of young leachate (Type I) from the emerging cell and 5.78 m3/day of mature leachate (Type III) from the old landfill. The two types of leachates are mixed in the main collection pipe that reaches a storage pool that receives 25.02 m3/day. The results of the physical-chemical analysis determine that the values of the parameters are outside the permissible limits. Turbidity is &gt;1000 NTU (Nephelometric Turbidity Unit), and the concentration of suspended solids is 1200 mg. L-1 and iron 135.85 mg. L-1. Calcium (1223 mg. L-1) and manganese (356.15 mg. L-1) were also evaluated, as these minerals are related to the 16,000 mg. L-1 of hardness. For the treatment of the mixed leachate, two phases are proposed: a) physical treatment by downward filtration in a granular bed to reduce the concentrations of suspended solids, and b) chemical treatment by oxidation using sodium hypochlorite. Laboratory results showed a 96.40% decrease in the concentration of suspended solids. Turbidity stabilized at 65 UTN. Iron, calcium, and manganese concentrations decreased by 95.60%, 96.28%, and 50.60%, respectively.

Automated Leaching Fraction-based Irrigation System Reduces Leaching, Conserves Water, and Supports Crop Growth in a Commercial Nursery

HighlightsAn automated irrigation system based on a novel leachate sensor was built to schedule and deliver irrigation to a container nursery.The sensor network was designed to achieve a 0.15 leaching fraction; it maintained an actual average leaching fraction of 0.17.Water use and container effluent were reduced by 60% and 96%, respectively, without reducing crop growth. Abstract.With the aim of reducing irrigation water use, an irrigation and leachate measurement and control system was developed and evaluated to automatically schedule and actuate irrigation in a commercial nursery. Leachate and irrigation sensors were built using a tipping bucket mechanism and used to calculate the daily leaching fraction (LF) = volume leached/volume applied. For the experimental daily irrigation schedule, the previous day’s LF was used to calculate irrigation run time for the current day using a scaled multiplier, where the change in irrigation run time was proportional to the difference between the calculated LF and the target LF, 0.15. The control zone was irrigated for two hours every other day simulating the commercial nursery’s standard schedule. The irrigation control system worked as designed and correctly imposed the irrigation treatments, including correctly delaying in response to rain and actuating based on a programmed minimum runtime, when necessary. Season-long water use was 60% less for the leachate-based irrigation schedule compared to the grower’s standard irrigation schedule (p = 0.0028). The average daily LFs were 0.17 and 0.73 for the LF-based irrigation and control, respectively (p &amp;lt; 0.0001). Compared to the grower’s standard practice the time averaged irrigation application rate was 3.3-fold less and time averaged leaching rate was 12.1-fold less for the LF-based irrigation schedule. Substrate volumetric water content was not correlated with LF and thus was not a good predictor of leaching fraction. Growth metrics were not impacted by irrigation treatment (p = 0.1429), indicating plants received sufficient water in the LF-based irrigation system. This novel system was able to actuate and adjust irrigation run-time based on daily leaching fraction without being influenced by the lag between irrigation and leaching and had an average leaching fraction within 0.02 of the target LF. Reducing water use with this LF-based schedule has the potential to reduce agrichemical-laden nursery effluent and increase nursery irrigation capacity, i.e., their ability to expand production on the current water supply. Keywords: Container effluent, ET-based irrigation, Irrigation schedule, Leachate, Precision irrigation, Sensor-based irrigation.

Citric Acid and EDTA as chelating agents in phytoremediation of heavy metal in polluted soil: a review

The application of metal chelating agents in phytoremediation has been shown to increase plant efficiency for heavy metal uptake in phytoextraction significantly. EDTA is a famous chelating agent used in phytoextraction. However, future use of EDTA is likely to be limited to ex-situ conditions where leachate control can be achieved, so there are limitations to its use that need to be studied. So that many phytoremediation studies have been carried out on organic chelating agents that are not expected to be harmful to the environment, one of which is Citric Acid. The purpose of this review is to compare commonly chelating agents, namely: EDTA as synthetic and Citric Acid as a natural matter for phytoremediation in polluted soils. This review also discusses the ability of Citric Acid and EDTA on phytoremediation, their effect on soil physiology and soil microbiology, advantages and disadvantages of each on the prospects of phytoremediation. EDTA can increase phytoextraction better than Citric Acid but can increase the risk of groundwater pollution because EDTA is difficult to degrade by the environment. In contrast, Citric Acid has been shown to increase phytoextraction, phytostabilization and harmless to the environment.

Implications of municipal solid waste co-disposal experiments on biodegradation and biochemical compatibility.

The objective of this study was to evaluate waste biodegradation and biochemical compatibility for different waste co-disposed with municipal solid waste (MSW). Laboratory-scale reactors were operated with MSW co-disposed with special solid waste, liquid waste, or sludge waste. Early and aggressive addition of liquid wastes during reactor startup did not stimulate anaerobic decomposition of fresh MSW. The majority of the liquid waste reactors were acid stuck and had leachate pH<6 and chemical oxygen demand in the range of 50,000mg-O2/L. The majority of liquid wastes in this study were not observed to be effective anaerobic inoculums and would not be recommended as the sole moisture source for bioreactor landfills. Enhanced early methane production was observed in the MSW reactors co-disposed with sludge (anaerobic and industrial) relative to the landfill leachate control reactors and all other waste combinations evaluated. Methane generation was observed in reactors operated with foundry waste or gypsum board co-disposed with MSW. Despite biochemical methane potential (BMP) results that indicated methane generation would be inhibited with these two waste streams, co-disposing with MSW did not completely inhibit anaerobic degradation. The BMP assays provided methane yield under ideal conditions, but did not capture other benefits of co-disposal (e.g., impacts of moisture addition). A potential co-disposal waste source should not be ruled out by BMP results alone.

Treatment of leachate through constructed wetlands using Typha angustifolia in combination with catalytic ozonation on Fe-zeolite A

Leachate control and management is a major challenge faced during solid waste management as it may pollute surface and groundwaters. In the current research, constructed wetlands (CWs) vegetated with Typha angustifolia plant in combination with catalytic ozonation by ferrous (Fe)-coated zeolite A was studied for the treatment of leachate. The CWs treatment with 9 days detention reduced the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) up to 75.81% and 69.84%, respectively. Moreover, total suspended solids (TSS), total dissolved solids (TDS), and total kjeldahl nitrogen (TKN) removal of 91.16%, 33.33%, and 25.22% were achieved, respectively. The Fe-coated zeolite A catalytic ozonation further reduced the COD up to 90.7%. Comparison of the processes showed the effective performance of the combined process (CW/O3/Fe-zeolite) with 97.76% COD reduction of leachate. It is, therefore, concluded that the studied combined process (CW/O3/Fe-zeolite A) was more efficient as compared with single ozonation and CW alone, hence it can be implied for the leachate treatment in real conditions.

Statistical modelling and assessment of landfill leachate emission from fresh municipal solid waste: A laboratory-scale anaerobic landfill simulation reactor study.

Quantification, measurement of quality, post-treatment, and leachate control has been a significant problem due to the dumping of waste in an unscientific manner across the globe, and especially in developing countries like India. In this context, the objective of this study was to investigate the degradation of fresh mixed municipal solid waste (MSW) in an anaerobic landfill reactor operated with rainfall addition in laboratory conditions. Experiments were carried out in a landfill reactor of 1 m length × 1 m width × 1.1 m height. The reactor was simulated with 50 years weighted average actual rainfall rate of India. It contained the waste composition of 73% wet waste (food and kitchen) and 27% dry waste (paper, plastic, wood, textiles, and others). The leachate parameters were continually monitored for 39 weeks. In the fresh MSW landfill reactor it was evident that concentrations of leachate parameters were high initially, and there was a significant decrease in BOD5 (7041-39310 mg L-1), COD (15692-71630 mg L-1) and TS (9077-33200 mg L-1) in leachate. Therefore, rainfall had a direct influence on leachate quality. The developed first-order decay models were used for BOD5, COD, and total solids with adjusted R2 of 0.83, 0.92, and 0.96, respectively. Therefore, this model can be applied for leachate strength estimation at any given time from the period of deposition of waste under similar rainfall and waste compositions, and is largely applicable in India and tropical areas. This study is expected to be a good simulation for cities with the waste composition of high wet waste (>70%) as the estimations of important design parameters such as BOD5, COD, VFA, and NH4+-N were studied in this research. As the importance of moisture (precipitation) has been established in this study, some moisture additions can be designed in areas with low rainfall, such as arid zones.

Assessment of the environmental impact of sanitary and unsanitary parts of a municipal solid waste landfill

Only seven regional MSWLF in Serbia are considered sanitary, while about 3500 landfills operate without proper pollution control. This paper presents a unique opportunity to evaluate the impact of a closed landfill, and a new sanitary landfill, which are located next to each other. The following methodologies for the landfill impact assessment were applied, based on data from 2012 to 2017: Landfill water pollution index (LWPI) and Nemerow index (PIGW) for groundwater, and the geo-accumulation (Igeo) and ecological risk (ERi) indices and several PAH ratios for soil. The performance of the leachate control system was evaluated using two adapted pollution indices: LPI and the Nemerow index (PIL). According to the obtained LWPI and PIGW values, the quality of groundwater at the new landfill is improving (LWPI = 1.05–2.62; PIGW = 0.52–1.29), while no significant changes were observed for the old landfill (LWPI = 3.06–5.13; PIGW = 2.03–4.78). High concentrations of ammonia nitrogen (1.01–22.74 mg/l), Fe (0.76–57.11 mg/l), Ni (5.80–230.09 μg/l), Pb (4.2–202.4 μg/l) and ∑PAH16 (150.93–189.55 ng/l) show the strong influence of the landfill on the groundwater quality at the old landfill, indicating the need for additional remediation action. High concentrations of Ni (21.9–133.0 mg/kg) and Cr (8.5–277.0 mg/kg) in the analyzed soil compared to other studies, as well as moderate Igeo values (IgeoNi = 0.36–1.88; IgeoCr = −1.20–1.52), raise concern and suggest the need for further monitoring. The high ERi (158.6–295.0) and Igeo values (0.91–2.30) of Hg show significant potential ecological risk. LPI and PIL values for early methanogenic phase leachate demonstrates the need to improve the leachate treatment system. The monitoring data and applied pollution indices indicate that Cr and As should be added to the EU Watch List of emerging substances, at least regarding EU potential candidate countries.

Investigation on heavy metals pollution of municipal refuse leachate from Tromsø landfill, Northern Norway

To investigate the heavy metal pollution in leachate from sanitary landfill site of municipal solid waste, a survey was conducted in Tromsø, Northern Norway. Results shows that contents of heavy metals in landfill leachate follow the order Mn>Zn>Ni>Cu>Cr>As>Pb>Cd>Hg, and the order of the risk of different heavy metals is: Mn>Ni>As>Zn>Cr>Pb>Cd>Hg>Cu. The concentrations of Mn and Ni in landfill leachate exceeded the standard. Mn had the highest single standard index. it took the highest risk to surround water and environment. According to comprehensive evaluation of water quality, the landfill leachate is moderately polluted. It is helpful for the control and management of leachate in garbage plants to know the degree and types of heavy metal pollution in leachate.

Impacts of landfill leachate on groundwater quality in desert climate regions

Control and management of landfill leachate are the most important concerns to protect the surrounding environment, especially the groundwater. In this study, an attempt was carried out to design an approximate tool for finding the safe groundwater withdrawal away from the pollution sources. A case study was applied to a landfill site in a desert climate region, at Mufrihat, the south western region of the Madinah City, KSA. Three boreholes were adopted to monitor the groundwater quality close to leachate collection lake of the landfill site. A 3D simulation model, combining modular finite-difference flow model and the modular three-dimensional transport model, was applied to the leachate collection site to understand the fate and migration of the leachate from collection site bed into the groundwater. The focus of this work was to predict the distribution of heavy metal concentration with both time and distance and to determine the safe location for water extraction from this aquifer. Results showed a good match between numerical model results and experimental measurements. Based on this math and sensitivity analyses performed by the computer model, an empirical mobility model was generated to support the decision makers of this area and similar regions to estimate the safe location for water withdrawal according to the initial concentration of the element, pumping rate and contact time. The mobility model showed that the well located at a minimum of 113 m away from the leachate collection lake would be safe from all studied pollutants.

EVALUATION ACTIVITY OF TRICHODERMA HARZIANUM TO CONTROL FUSARIUM SOLANI, ALTERNARIA SPP., ASPERGILLUS NIGER AND RHIZOPUS SPP. OF GREENHOUSE FRESH TOMATOES

The aim of this study is to evaluate the ability of Trichoderma harzainum as anti-pathogenic fungi of tomato after harvest which include ( Fusarium solani, Alternaria , Aspergillus niger and Rhizopus ) which was isolated from infected tomato using fungal leachate and spore suspension (106 conidia+ mycelia fragments\ml) bio control. The results showed high capacity fungal leachate on inhibition the germination of pathogenic spore in culture media as the percentage of germination of pathogenic fungi which in turn was treated with leachate concentration of 50% (15,13,12,10) respectively. In contrast on a concentration 100% there were no germination of these treated spores and there was no germination in the culture media which was treated with leachate. The spore suspension 106 of Trichderma showed high effect of germination of fungi spores in culture media which recorded a percentage (3,10,5,20) respectively . The effect of Trichoderma harzianum leachate and spore suspension on reduced mold in fruit was variant and with its highest effect was on Rhizopus spp. , which recorded infection rate of 29.02 for fungal leachate and 35.12 for spore suspension.

Co-treatment of sewage sludge and mature landfill leachate by anaerobic digestion

In this study, sewage sludge was co-digested with different amounts of mature landfill leachate (0, 5, 10, 20, and 40% v/v) to evaluate the yield capacities of biogas and CH4. The highest biogas yield was obtained from the treatment with 10% leachate dose (T2) and control with 0% leachate dose, while the lowest biogas was produced from the treatment with 40% leachate dose. The highest CH4 production (maximum yield per kg VS consumed) was also obtained from T2, which was about 36% (v/v) higher than the control. This result was confirmed by the first-order kinetic model. It was also observed that the COD, TS, and VS removal efficiencies significantly decreased with increasing the leachate dose. However, the increased dose of leachate did not inhibit TN removal efficiency. This study demonstrates that mature landfill leachate could be treated via anaerobic co-digestion process with sewage sludge to enhance biogas production at low doses (up to 20% v/v).

The contaminant legacy from historic coastal landfills and their potential as sources of diffuse pollution

Prior to modern environmental regulation landfills in low-lying coastal environments were frequently constructed without leachate control, relying on natural attenuation within inter-tidal sediments to dilute and disperse contaminants reducing environmental impact. With sea level rise and coastal erosion these sites may now pose a pollution risk, yet have received little investigation. This work examines the extent of metal contamination in saltmarsh sediments surrounding a historic landfill in the UK.Patterns of sediment metal data suggest typical anthropogenic pollution chronologies for saltmarsh sediments in industrialised nations. However, many metals were also enriched at depth in close proximity to the landfill boundary and are indicative of a historical leachate plume. Though this total metal load is low, e.g., c. 1200 and 1650kg Pb and Zn respectively, with >1000 historic landfills on flood risk or eroding coastlines in the UK this could represent a significant, yet under-investigated, source of diffuse pollution.

Preremedial assessment of the municipal landfill pollution impact on soil and shallow groundwater in Subotica, Serbia

Most regional municipal solid waste landfills in Serbia are operated without control of landfill leachate and gas or with no regard for implementation of national and European legislation. For the first time in Serbia, groundwater and soil at a landfill were subject to systematic annual monitoring according to national, European legislation and adopted methodologies. Characterisation of the groundwater and soil samples from the landfill included ten metals (Fe, Mn, As, Zn, Cd, Pb, Ni, Cr, Cu and Hg), 16 EPA PAHs, nutrients and certain physicochemical parameters, in order to assess the risks such poorly controlled landfills pose to the environment. This impact assessment was performed using specially adapted pollution indices: LWPI, the Single factor pollution index and the Nemerow index for groundwater, and geo-accumulation index, ecological risk factor and selected rations of PAHs for soil. The data analysis included multivariate statistical methods (factor analysis of principal component analysis (PCA/FA)) in order to assess the extent of the contaminants detected in the groundwater and soil samples.The pollution indices (LWPI: 3.56–8.89; Nemerow index: 2.02–3.78) indicate the quality of the groundwater at the landfill is degrading over time, with PAH16, TOC, Cr, Cu, Pb and Zn as the substances of greatest concern. Heavy metals Hg (Igeo≤3.14), Pb (Igeo≤2.22), Cr (Igeo≤3.31) and Cu (Igeo≤2.16) represent the worst soil contamination. Hg has moderate (52.9) to very high (530.0) potential ecological risk, demonstrating the long-term potential effects of bioaccumulation and biomagnification.The results of this work indicate that Cr and Cu should possibly be added to the EU Watch List of emerging substances. This proposition is substantiated by relevant state and alike environmental information from nations in the region. This study demonstrates the need to develop a model for prioritization of landfill closure and remediation based on environmental risk assessment.